Add tests for parent seed backup and filename validation

src/tests/test_parent_seed_backup.py

@@ -0,0 +1,73 @@
+import builtins
+import sys
+from pathlib import Path
+from types import SimpleNamespace
+
+sys.path.append(str(Path(__file__).resolve().parents[1]))
+
+from password_manager.manager import PasswordManager
+from constants import DEFAULT_SEED_BACKUP_FILENAME
+
+
+def _make_pm(tmp_path: Path) -> PasswordManager:
+    pm = PasswordManager.__new__(PasswordManager)
+    pm.parent_seed = "seed phrase"
+    pm.fingerprint_dir = tmp_path
+    pm.encryption_manager = SimpleNamespace(encrypt_and_save_file=lambda *a, **k: None)
+    pm.verify_password = lambda pw: True
+    return pm
+
+
+def test_handle_backup_reveal_parent_seed_confirm(monkeypatch, tmp_path, capsys):
+    pm = _make_pm(tmp_path)
+
+    monkeypatch.setattr(
+        "password_manager.manager.prompt_existing_password", lambda *_: "pw"
+    )
+    confirms = iter([True, True])
+    monkeypatch.setattr(
+        "password_manager.manager.confirm_action", lambda *_a, **_k: next(confirms)
+    )
+    saved = []
+
+    def fake_save(data, path):
+        saved.append((data, path))
+
+    pm.encryption_manager = SimpleNamespace(encrypt_and_save_file=fake_save)
+    monkeypatch.setattr(builtins, "input", lambda *_: "mybackup.enc")
+
+    pm.handle_backup_reveal_parent_seed()
+    out = capsys.readouterr().out
+
+    assert "seed phrase" in out
+    assert saved
+    assert saved[0][1] == tmp_path / "mybackup.enc"
+
+
+def test_handle_backup_reveal_parent_seed_cancel(monkeypatch, tmp_path, capsys):
+    pm = _make_pm(tmp_path)
+
+    monkeypatch.setattr(
+        "password_manager.manager.prompt_existing_password", lambda *_: "pw"
+    )
+    monkeypatch.setattr(
+        "password_manager.manager.confirm_action", lambda *_a, **_k: False
+    )
+    saved = []
+    pm.encryption_manager = SimpleNamespace(
+        encrypt_and_save_file=lambda data, path: saved.append((data, path))
+    )
+
+    pm.handle_backup_reveal_parent_seed()
+    out = capsys.readouterr().out
+
+    assert "seed phrase" not in out
+    assert not saved
+
+
+def test_is_valid_filename(tmp_path):
+    pm = _make_pm(tmp_path)
+    invalid = ["../bad", "", "bad/name", "bad\\name", "..", "/absolute"]
+    for name in invalid:
+        assert not pm.is_valid_filename(name)
+    assert pm.is_valid_filename("good.enc")